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Unable to establish a deicing holdover time with ice pellets as an added WX factor, PIC of a CL65 performs a takeoff at dfw, tx.
| Attributes | |
| ACN | 574524 |
| Time | |
| Date | 200302 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Snow Ice other |
| Aircraft 1 | |
| Controlling Facilities | tower : stl.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 12000 flight time type : 2500 |
| ASRS Report | 574524 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | inflight encounter : weather other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Weather Aircraft Chart Or Publication Company Flight Crew Human Performance |
| Primary Problem | Weather |
| Situations | |
| Publication | Plt Op Manual |
Narrative:
We were deiced, and while being deiced, new WX (ATIS) was reporting ice pellets. I did not get the new ATIS, but did observe light ice pellets. Time from deice to takeoff was about 3 mins. Prior to takeoff checked and looked around windshield and wipers. No ice present, so we proceeded to takeoff with no abnormalities. Did not realize that our pilot operating handbook states if no holdover time can be established, that we are not permitted to take off. With ice pellets, no holdover time is available. We took off on clear wing concept, saw wing was clean, and proceeded.
Original NASA ASRS Text
Title: UNABLE TO ESTABLISH A DEICING HOLDOVER TIME WITH ICE PELLETS AS AN ADDED WX FACTOR, PIC OF A CL65 PERFORMS A TKOF AT DFW, TX.
Narrative: WE WERE DEICED, AND WHILE BEING DEICED, NEW WX (ATIS) WAS RPTING ICE PELLETS. I DID NOT GET THE NEW ATIS, BUT DID OBSERVE LIGHT ICE PELLETS. TIME FROM DEICE TO TKOF WAS ABOUT 3 MINS. PRIOR TO TKOF CHKED AND LOOKED AROUND WINDSHIELD AND WIPERS. NO ICE PRESENT, SO WE PROCEEDED TO TKOF WITH NO ABNORMALITIES. DID NOT REALIZE THAT OUR PLT OPERATING HANDBOOK STATES IF NO HOLDOVER TIME CAN BE ESTABLISHED, THAT WE ARE NOT PERMITTED TO TAKE OFF. WITH ICE PELLETS, NO HOLDOVER TIME IS AVAILABLE. WE TOOK OFF ON CLR WING CONCEPT, SAW WING WAS CLEAN, AND PROCEEDED.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.